Cisco HWIC-3G-GSM User manual

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Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Configuring the 3G Wireless High-Speed WAN
Interface Cards for Cisco 1841, 1861, and 2800 and
3800 Series Routers (HWIC-3G-GSM and
HWIC-3G-HSPA)
First Published: March 14, 2007
Revised: April 15, 2009
The Third Generation (3G) Wireless High-Speed WAN Interface Card (HWIC) is a multiband,
multiservice WAN card for use over WCDMA Radio Access Networks (RAN). It is used as the primary
WAN connectivity and as a backup for critical applications. The 3G HWIC can also be used as the
primary WAN connection.
Note Unless specifically mentioned, in this document, 3G HWIC refers to both the HWIC-3G-HSPA and
HWIC-3G-GSM SKUs.
It is supported on the following Cisco integrated services routers (Cisco ISRs):
•Cisco 1841
•Cisco 1861
•Cisco 2800 series
•Cisco 3800 series
The 3G HWICs provide the following functionality:
•Broadband WAN connectivity using high-speed cellular data technology
•Support for the following technologies:
– High Speed Packet Access (HSPA)
- High-speed Downlink Packet Access (HSDPA)
- High-speed Uplink Packet Access (HSUPA)
– Universal Mobile Telecommunication System (UMTS)
– Enhanced Data-Rates for GSM Evolution (EDGE)

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Configuring the 3G Wireless High-Speed WAN Interface Card for Cisco 1841, 1861, and 2800 and 3800 Series Routers (HWIC-3G-GSM and
– General Packet Radio Service (GPRS)
•Automatic best-network selection
•Always-on capability
•Multiple antenna and cable options:
– Diversity antenna
– Indoor and outdoor external antennas
– Radio Frequency Ultra-Low Loss (RF-ULL) cable length from 10 ft. to 75 ft.
•IOS-based Mobile IP including network mobility (NEMO)
•Static and dynamic IP addressing
•Cellular interface based on the asynchronous interface in Cisco IOS software
•Network Address Translation (NAT) and Port Address Translation (PAT) support
•Security features such as firewall, intrusion-detection systems (IDS), and intrusion-prevention
systems (IPS)
•Support for enhanced security features, such as GET VPN, EZ VPN, DMVPN, Multi-point GRE
(mGRE), and IPSec VPN
•Auto-detecting optimized WAN switch-over
•Support for Hot Standby Router Protocol (HSRP) and Virtual Router Redundancy Protocol (VRRP)
•Cellular WAN management information base (MIB)
•Diagnostic and monitoring capability
•Complete Cisco IOS feature capability
Table 1 shows the SKU and the frequencies supported by the 3G HWICs.
Table 1 SKU Description and Supported Frequencies
SKU Number Description Region Frequency Bands
HWIC-3G-GSM HSDPA/UMTS/EDGE/GPRS Worldwide 800/850/1900/2100 MHz
for WCDMA
850/900/1800/1900 for
EDGE/GPRS
HWIC-3G-HSPA HSPA (HSUPA/HSDPA)
/UMTS/EDGE/GPRS
Worldwide 800/850/1900/2100 MHz
for WCDMA
850/900/1800/1900 for
EDGE/GPRS

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Configuring the 3G Wireless High-Speed WAN Interface Card for Cisco 1841, 1861, and 2800 and 3800 Series Routers (HWIC-3G-GSM and
Figure 1 shows HWIC-3G-GSM and Figure 2 shows HWIC-3G-HSPA HWICs.
Figure 1 Front Panel of HWIC-3G-GSM
Figure 2 Front Panel of HWIC-3G-HSPA
Note The diagnostic port is not required for normal activation or operation. Please see the “Modem
Troubleshooting Using the Diagnostic Port” section on page 79 for details.
1Mounting Screws 3Antenna Connector
2Diagnostic Port 4LEDs
170842
WWAN RSSI UMTS
ANT
HSDPA
HWIC-
3G-GSM
Diag Port
1 132
4 4 4 4
HWIC-
3G-HSPA
WWAN
RSSI
Diag Port
HSPA
MAIN
DIV
UMTS
273223
1
4 4 4 4
2 3 1
1Mounting Screws 3Main Antenna Connector
2Diagnostic Port 4LEDs
5Diversity Antenna Connector

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Table 2 lists the LEDs and describes their functionality and different states. The LEDs provide a visual
indication of your available services. Please see Installing Cisco Interface Cards in Cisco Access Routers
on Cisco.com for hardware installation details.
The 3G HWIC provides the following software functionality:
•Modem management—You can access modem software and hardware information, radio and
network status, and data profile information by using Cisco IOS commands.
•Dial on Demand Routing (DDR)—This allows you to set up a data call when there is data traffic to
be sent over the wireless network.
•Fallback connection (DDR backup)—The 3G WAN HWIC allows you to configure the cellular
modem to initiate a dialup connection when connection to a primary service is lost.
•Teardown after fallback (part of fallback DDR)—After a primary connection has failed and the
cellular connection is in fallback mode, the 3G HWIC tears down the fallback-mode connection
when the primary connection is available.
•Automatic teardown—After a configurable timeout, the 3G HWIC automatically tears down a
connection if there has been no activity.
•Autodetect—The 3G HWIC automatically detects and uses the best available service.
•Profile Configuration—You can configure upto 16 APN profiles.
•SIM Lock/Unlock.
Table 2 3G HWIC LED Descriptions
LED Description
RSSI Off: Low RSSI (under -100 dBm).
Slow Green Blink: Low or medium RSSI (-99 to -90 dBm).
Fast Green Blink: Medium RSSI (-89 to -70 dBm).
Solid Green: High RSSI (-69 dBm or higher).
Solid Yellow: No service.
WWAN Off: HWIC in reset mode or not powered.
Slow blink: Searching for service.
Solid Green: Active service; no traffic detected.
Fast Blink: Active service, and traffic detected proportional to blink rate.
UMTS UMTS is the active service.
HSDPA (HWIC-3G-GSM only) HSDPA is the active service.
HSPA (HWIC-3G-HSPA only) HSPA is the active service.
Note Both HSPA/HSDPA and UMTS LEDs Off: Fallback (EGDE or GPRS) service is active.
If the RSSI LED is solid yellow, it means that there is no service.
Note Active service means the currently available service. Your 3G HWIC automatically selects the
best available connection.

Configuring the 3G Wireless High-Speed WAN Interface Cards for Cisco 1841, 1861, and 2800 and 3800 Series Routers
Contents
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Configuring the 3G Wireless High-Speed WAN Interface Card for Cisco 1841, 1861, and 2800 and 3800 Series Routers (HWIC-3G-GSM and
•Bands Selection based on different geographical regions.
•Firmware upgrade—You can upgrade the firmware on the modem by using Cisco IOS commands.
•3G HWIC support on Cisco Integrated Services Router (ISR) platforms, namely Cisco 1841,
Cisco1861,Cisco2801,Cisco2811,Cisco2821, Cisco 2851, Cisco 3825, and Cisco 3845.
•Comprehensive Cisco IOS MIB support including Interface (IF) MIBs and Entity MIBs.
•3G cellular MIB support.
Feature History
Finding Support Information for Platforms and Cisco IOS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image
support. Access Cisco Feature Navigator at http://www.cisco.com/go/fn. You must have an account on
Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at
the login dialog box and follow the instructions that appear.
Contents
•Prerequisites for Configuring the 3G HWIC, page 5
•Restrictions for Configuring the 3G HWIC, page 6
•Overview of UMTS/GSM Data Network, page 6
•Overview of SNMP MIBs, page 8
•How to Configure the 3G HWIC, page 13
•Configuration Examples for the 3G HWIC, page 22
•Modem Firmware Upgrade, page 26
•Additional References, page 28
•Command Reference, page 29
•Troubleshooting, page 75
Prerequisites for Configuring the 3G HWIC
The following are prerequisites to configuring the 3G HWICs:
•You must have service availability on the HWIC from a carrier, and you must have network coverage
where your router will be physically placed. For a complete list of supported carriers, see the data
sheet at the following URL: http://www.cisco.com/go/3g
Release Modification
12.4(11)XV This feature was introduced for HWIC-3G-GSM. (This image is not
supported any longer.)
12.4(15)T This feature was integrated into Cisco IOS Release 12.4(15)T.
12.4(15)T1 This feature was updated.
12.4(22)YB1 The HSPA feature was introduced.

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Restrictions for Configuring the 3G HWIC
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Configuring the 3G Wireless High-Speed WAN Interface Card for Cisco 1841, 1861, and 2800 and 3800 Series Routers (HWIC-3G-GSM and
•You must subscribe to a service plan with a wireless service provider and obtain a SIM card.
You must install the SIM card before configuring the 3G HWIC. For instructions on how to install the
SIM card, Please see Installing Cisco Interface Cards in Cisco Access Routers on Cisco.com for
hardware installation details.
•You must install the required antennas before you configure the 3G HWIC. See the following URLs
for instructions on how to install the antennas:
– 3G-ANTM1919D—See the Cisco Multiband Swivel Mount Dipole Antenna (3G-ANTM1919D)
– 3G-ANTM1916-CM—See the Cisco Multiband Omnidirectional Ceiling Mount Antenna
(3G-ANTM1916-CM)
– 3G-AE015-R (Antenna Extension)—See the Cisco Single-Port Antenna Stand for Multiband
TNC Male-Terminated Portable Antenna (3G-AE015-R)
– 3G-AE010-R (Antenna Extension)—See the Cisco Single-Port Antenna Stand for Multiband
TNC Male-Terminated Portable Antenna (3G-AE010-R)
– 3G-ANTMOUT-OM—See the Cisco 3G Omnidirectional Outdoor Antenna
(3G-ANTM-OUT-OM)
– 3G-ANTM-OUT-LP—See the Cisco 3G Low Profile Outdoor Antenna (3G-ANTM-OUT-LP)
– 3G-ACC-OUT-LA—See the Cisco 3G Lightning Arrestor (3G-ACC-OUT-LA)
•You must check your LEDs for signal reception as described in Table 2.
•You should be familiar with the Cisco IOS software , beginning with Release 12.4(15)T or later for
Cisco HWIC support. (See the Cisco IOS documentation.)
•To configure your 3G HWIC data profile, you will need the following information from your service
provider:
– Username (if required by your carrier)
– Password (if required by your carrier)
– Access Point Name (APN)
Restrictions for Configuring the 3G HWIC
The following restrictions apply to configuring the Cisco 3G HWICs:
•Data connection can be originated only by the 3G HWIC. Remote dial-in is not supported.
•Throughput—due to the shared nature of wireless communications, the experienced throughput
varies depending on the number of active users or congestion in a given network.
•Cellular networks have higher latency compared to wired networks. Latency rates depend on the
technology and carrier. Latency may be higher because of network congestion.
•Any restrictions that are a part of the terms of service from your carrier.
Overview of UMTS/GSM Data Network
The Global System for Mobile Communications (GSM) is the most widely deployed cellular network in
the world. It is based on the specification from European Telecommunications Standards Institute
(ETSI). GSM was primarily designed for voice and was circuit switched but due to the popularity of

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cellular networks and the great demand for data services, GPRS was introduced as a packet switched
data overlay over the GSM radio network. The radio and network resources of GPRS are accessed only
when data actually needs to be transmitted between the GPRS mobile user and the GPRS network.
GPRS introduced several new network nodes into the GSM architecture for packet switching, they form
the Mobile Packet Core. The Mobile Packet Core includes the Serving GPRS Support Node (SGSN) and
the GPRS Gateway Support Node (GGSN). The SGSN is the node which in some ways carries out the
same function as the Foreign Agent in Mobile IP. It tunnels IP packets towards the GGSN and detunnels
packets back from the GGSN. It also carries out mobility managed and billing. The GGSN is the node
which carries out the role in GPRS equivalent to the Home Agent in Mobile IP. The GGSN provides the
connectivity to the IP network and the SGSN. It is responsible for IP address assignment and is the
default router for the connected User Equipment (UE).
Figure 3 shows a GSM network and the network elements it contains.
Figure 3 GSM Network Overview
The Base Tranceiver Station (BTS) and Base Station Controller (BSC) are located at the Cell site and
are the common nodes for both voice and data services. They provide the radio or the physical layer
connectivity between the mobile user and the mobile network. As the BSC voice and data traffic get
segregated, the voice traffic goes to the Mobile Switching Center (MSC), while the data traffic is sent to
the GGSN. From the GGSN, the data packets either go directly to the internet or they can be backhauled
to the customer data center for a VPN connection.
UMTS is a 3G wireless system that delivers high-bandwidth data and voice services to mobile
users.UMTS evolved from GSM. UMTS has a new air interface based on Wideband Code Division
Multiple Access (W-CDMA) and an IP core network based on general-packet radio service (GPRS). The
nodes in a UMTS network are almost the same as in a GSM/GPRS network. BTS and BSC have been
renamed to Node B and Radio Network Controller (RNC), respectively. UMTS addresses the growing
MSC
GGSN/
PDSN
PSTN
Internet
BTS/BSC
Branch Office
with Cellular HWIC
HQ
Voice
Data
Carrier Network
Leased Line
(MPLS, FR, Fiber)
BTS: Base Transceiver Stations
BSC: Base Station Controller
MSC: Mobile Switching Center
SGSN: Service GPRS Support Node
GGSN: Gateway SPRS Support Node
230351

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Overview of UMTS/GSM Data Network
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demand of mobile and Internet applications for new capacity in the overcrowded mobile
communications sky. The new network increases transmission speed to 2 Mbps per mobile user and
establishes a global roaming standard.
Overview of SNMP MIBs
Simple Management Network Protocol (SNMP) development and use is centered around the
Management Information Base (MIB). An SNMP MIB is an abstract data base, i.e., a conceptual
specification for information that a management application may read and modify in a certain form. This
does not imply that the information is kept in the managed system in that same form. The SNMP agent
translates between the internal data structures and formats of the managed system and the external data
structures and formats defined for the MIB.
The SNMP MIB is conceptually a tree structure with conceptual tables. Cisco 3G MIB is discussed in
more detail in the next section. Relative to this tree structure, the term MIB is used in two senses. In one
sense it is actually a MIB branch, usually containing information for a single aspect of technology, such
as a transmission medium or a routing protocol. A MIB used in this sense is more accurately called a
MIB module, and is usually defined in a single document. In the other sense a MIB is a collection of
such branches. Such a collection might comprise, for example, all the MIB modules implemented by a
given agent, or the entire collection of MIB modules defined for SNMP.
A MIB is a tree where the leaves are individual items of data called objects. An object may be, for
example, a counter or a protocol status. MIB objects are also sometimes called variables.
MIBs can be classified into three categories:
•IF MIBs—describes interface statistics
•Cisco-Entity-Vendortype-OID-MIB.my—ENTITY-MIBs are used to provide general hardware type
for both the HWIC and the modem. CISCO-ENTITY-VENDORTYPE-OID-MIB assigns OIDs for
Cisco components (including the HWICs & the modems). The OIDs are then used as the values of
entPhysicalVendorType in the ENTITY-MIB.
•3G/Wireless MIBs—cellular or wireless-specific MIBs
3G Cellular WAN MIB Architecture
This section describes the MIB definition and implementation support for Cisco's cellular 3G WAN
products on the customer premises equipment (CPE) end.
The 3G Cellular WAN MIB supports both CDMA and GSM set of cellular standards and includes the
following technologies:
•GSM—GPRS/EDGE/UMTS/HSPA
•CDMA—1xRTT/EVDO RevA/EVDO RevB
The 3G cellular MIB uses indexes from the cellular interface and from the modem. You can obtain the
interface index using IF-MIBs and the modem index using the ENTITY MIBs.

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Overview of UMTS/GSM Data Network
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The 3G MIB definition includes the following major sub-trees:
•Common objects
•CDMA objects
•GSM objects
•Traps or notifications
You can use MIB object c3gStandard defined in the c3gWanCommonTable to distinguish between
CDMA or GSM and implementing MIB for CDMA or GSM.
Note Cisco 3G MIB supports all SNMP versions including V1, V2, V2C and V3.
At a high level architecture, the Cisco 3G WAN MIBs are divided into two groups and have the following
structure:
1. ciscoWan3gMIBNotifs—this group defines all the trap events for Cisco 3G WAN MIBs
2. ciscoWan3gMIBObjects—this group defines all the MIB objects for Cisco 3G WAN MIBs
ciscoWan3gMIBObjects
The ciscoWan3gMIBObjects group has three sub-groups:
– c3gWanCommonTable—defines the common MIB objects for both CDMA and GSM.
– c3gWanCdma—defines the MIB objects specific for CDMA set of standards (3GPP2).
– c3gWanGsm—defines the MIB objects specific for GSM set of standards (3GPP).
c3gWanCdma
Under c3gWanCdma, there are seven sub-groups:
•c3gCdmaSessionTable for CDMA session related objects.
•c3gCdmaConnectionTable for CDMA connection related objects.
•c3gCdmaIdentityTable for CDMA user identity related objects.
•c3gCdmaNetworkTable for CDMA network related objects.
•c3gCdmaProfile for CDMA user profile related objects.
•c3gCdmaRadio for CDMA radio related objects.
•c3gCdmaSecurityTable for CDMA security related objects.
c3gWanGsm
Under c3gWANGsm, there are five sub-groups:
•c3gGsmIdentityTable for GSM user identity related objects.
•c3gGsmNetworkTable for GSM network related objects.
•c3gGsmPdpProfile for GSM PDP profile related objects.
•c3gGsmRadio for GSM radio related objects.
•c3gGsmSecurityTable for GSM security related objects.

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Overview of UMTS/GSM Data Network
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ciscoWan3gMIBNotifs
Cisco Cellular 3G WAN MIB implementation supports SNMP GET (read operation) for all MIB objects,
and SNMP SET (write operation) for the following RW (read-write) objects and more:
•c3gRssiOnsetNotifThreshold
•c3gRssiAbateNotifThreshold
•c3gEcIoOnsetNotifThreshold
•c3gEcIoAbateNotifThreshold
•c3gModemTemperOnsetNotifThreshold
•c3gModemTemperAbateNotifThreshold
•c3gModemReset
•c3gModemUpNotifEnabled
•c3gModemDownNotifEnabled
•c3gServiceChangedNotifEnabled
•c3gNetworkChangedNotifEnabled
•c3gConnectionStatusChangedNotifFlag
•c3gRssiOnsetNotifFlag
•c3gRssiAbateNotifFlag
•c3gEcIoOnsetNotifFlag
•c3gEcIoAbateNotifFlag
•c3gModemTemperOnsetNotifEnabled
•c3gModemTemperAbateNotifEnabled
Note By default, all notifications are disabled. To view notifications, you must enable these notifications.
Note The IF MIBs also have notifications for the cellular interface objects that are used in conjunction with
the notification type. When you get a notification, you must check the associated objects.
Table 3 shows various notifications and what they mean.
Table 3 Notifications
Notifications Details
ModemUpNotification Modem successfully recognized
ModemDown Crash or power-cycle
Change Notification Notifies about changes in service objects related to this
notification—previous service type to current service type
ConnectionStatus Shows the connection status. Service type is included in this notification.

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Configuring the 3G Wireless High-Speed WAN Interface Card for Cisco 1841, 1861, and 2800 and 3800 Series Routers (HWIC-3G-GSM and
Restrictions
•For the router that runs the SNMP agent, you must configure appropriate access control (e.g.
SNMP-server community) using the Cisco IOS CLI for the NMS and agent to work properly.
•It is strongly recommended that you configure SNMP V3 with authentication/privacy when
implementing SNMP SET operation.
Supported Cisco Antennas and Cables
Table 4 lists the Cisco antennas that are supported for use on the 3G HWIC.
.
Table 4 Cisco Antennas Supported on the 3G HWIC
Cisco Part Number Antenna Type
Maximum Gain and
Frequency Range Description
3G-ANTM1919D Dipole
omnidirectional
0 dBi
(806–960 MHz)
0 dBi
(1710–2170 MHz)
This is the default antenna. Multiband
faceplate-mounted dipole antenna. For more
information, see the Cisco Multiband Swivel Mount
Dipole Antenna (3G-ANTM1919D) document.
3G-ANTM1916-CM High-gain
ceiling-mount
omnidirectional
1.5 dBi
(806–960 MHz)
2.5 dBi
(1710–2170 MHz)
Multiband ceiling-mounted omnidirectional antenna.
For more information, see the Cisco Multiband
Omnidirectional Ceiling Mount Antenna
(3G-ANTM1916-CM) document.
3G-AE015-R
(Antenna Extension)
Extension base 0.8–6.0 GHz This antenna extension is a base with a 15-foot cable
included for use with a dipole omnidirectional antenna.
For more information, see the Cisco Single-Port
Antenna Stand for Multiband TNC Male-Terminated
Portable Antenna (3G-AE015-R) document.
3G-AE010-R
(Antenna Extension)
Extension Base This antenna extension is a base with a 10-foot cable
included for use with dipole omnidirectional antennas.
For more information, see the Cisco Single-Port
Antenna Stand for Multiband TNC Male-Terminated
Portable Antenna (3G-AE010-R) document.
3G-ANTM-OUT-OM Outdoor
Omnidirectional
+2 dBi
800/900 MHz
+4 dBi
1800/1900/2100 MHz
This is an outdoor low profile omindirectional mast
antenna. For more information, see Cisco 3G
Omnidirectional Outdoor Antenna
(3G-ANTM-OUT-OM)
3G-ANTM-OUT-LP Low Profile Stick
Antenna
- 1.5 dBi
850, 900 MHz
- 2.5 dBi
1800, 1900, 2100 MHz
This is an omindirectional stick antenna. For more
information, see Cisco 3G Low Profile Outdoor
Antenna (3G-ANTM-OUT-LP)
3G-ACC-OUT-LA
(Lightning Arrestor)
Lightning Arrestor 800 MHz to 2200 MHz This is a quarter-wave lightning protector with
integrated high-pass filter. For more information, see
Cisco 3G Lightning Arrestor (3G-ACC-OUT-LA)

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Overview of UMTS/GSM Data Network
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Configuring the 3G Wireless High-Speed WAN Interface Card for Cisco 1841, 1861, and 2800 and 3800 Series Routers (HWIC-3G-GSM and
Table 5 lists insertion loss information for the ultra-low-loss (ULL) LMR 400 extension cables available
from Cisco for use with the ceiling-mounted antenna.
Figure 4 shows some antenna options for the 3G HWIC.
Figure 4 Antenna Options
Table 5 Cisco Extension Cables for Use with Antennas
Cisco Product Number Cable Length Insertion Loss Frequency (MHz)
3G-CAB-ULL-20 20 ft (6 m) 1.50 dB max. 2100
3G-CAB-ULL-50 50 ft (15 m) 3.50 dB max. 2100
3G-CAB-LMR240-25 25 ft (7.5 m) 2200
3G-CAB-LMR240-50 50 ft (15 m) 2200
3G-CAB-LMR240-75 75 ft (23 m) 2200
230280
1
2
3
4
5
Cisco 3G-ANTM1916-CM
Ceiling-mount
Omnidirectional antenna
Cisco 3G-ANTM1916-CM
Ceiling-mount
Omnidirectional antenna
Cisco 3G-ANTM1919D
Dipole Antenna
Cisco 3G-ANTM1919D
Dipole Antenna
Router with
3G Wireless HWIC
Router with
3G Wireless HWIC
Router with
3G Wireless HWIC
Router with
3G Wireless HWIC
Cisco 3G-AE015-R
Extended Antenna Base
Fixture Integrated with
RF Cable (15 feet)
Cisco 3G-CAB-ULL-20
RF Cable (20 Feet)
Cisco 3G-CAB-ULL-50
RF Cable (50 Feet)
230280
1
2
3
4
5
Cisco 3G-ANTM1916-CM
Ceiling-mount
Omnidirectional antenna
Cisco 3G-ANTM1916-CM
Ceiling-mount
Omnidirectional antenna
Cisco 3G-ANTM1919D
Dipole Antenna
Cisco 3G-ANTM1919D
Dipole Antenna
Router with
3G Wireless HWIC
Router with
3G Wireless HWIC
Router with
3G Wireless HWIC
Router with
3G Wireless HWIC
Cisco 3G-AE015-R
Extended Antenna Base
Fixture Integrated with
RF Cable (15 feet)
Cisco 3G-CAB-ULL-20
RF Cable (20 Feet)
Cisco 3G-CAB-ULL-50
RF Cable (50 Feet)

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How to Configure the 3G HWIC
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Configuring the 3G Wireless High-Speed WAN Interface Card for Cisco 1841, 1861, and 2800 and 3800 Series Routers (HWIC-3G-GSM and
How to Configure the 3G HWIC
To configure the 3G HWIC, follow these procedures:
•Data Account Provisioning
•Data Call Setup
Data Account Provisioning
Note To provision your modem, you must have an active wireless account with a service provider and a SIM
card installed in your 3G HWIC.
To provision your data account, follow these procedures:
•Verifying Signal Strength and Service Availability, page 13
•Configuring a Modem Data Profile, page 14
Verifying Signal Strength and Service Availability
To verify the signal strength and service availability on your modem, use the following commands in
privileged EXEC mode.
SUMMARY STEPS
1. show cellular network
2. show cellular radio
3. show cellular profile
4. show cellular security
5. show cellular all

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DETAILED STEPS
Configuring a Modem Data Profile
To configure or create a new modem data profile, enter the following command in privileged EXEC
mode.
SUMMARY STEPS
1. cellular gsm profile create <profile number> <apn> <authentication> <username> <password>
DETAILED STEPS
Command or Action Purpose
Step 1 Router# show cellular <slot/wic/port> network
Example:
Router# show cellular 0/0/0 network
Displays information about the carrier network, cell
site, and available service.
Step 2 Router# show cellular <slot/wic/port> radio
Example:
Router# show cellular 0/0/0 radio
Shows the radio signal strength.
Note The RSSI should be better than -90 dBm for
steady and reliable connection.
Step 3 Router# show cellular <slot/wic/port> profile
Example:
Router# show cellular 0/0/0 profile
Shows information about the modem data profiles
created.
Step 4 Router# show cellular <slot/wic/port> security
Example:
Router# show cellular 0/0/0 security
Shows the security information for the modem, such
as SIM and modem lock status.
Step 5 Router# show cellular <slot/wic/port> all
Example:
Router# show cellular 0/0/0 all
Shows consolidated information about the modem,
profiles created, radio signal strength, network
security, and so on.
Command or Action Purpose
Router# cellular <slot/wic/port> gsm profile create
<profile number> <apn> <authentication> <username>
<password>
Example:
Router# cellular 0/0/0 gsm profile create 3 apn.com
chap GSM GSMPassword
Creates a new modem data profile. Refer
to Table 6 for details on the command
parameters.

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Table 6 Modem Data Profile Parameters
Data Call Setup
To set up a data call, use the following procedures:
•Configuring the Cellular Interface, page 15
•Configuring DDR, page 17
•Configuring DDR Backup, page 19
Figure 5 shows a typical data call setup with the 3G HWIC.
Figure 5 Data Call Setup with HWIC-3G-GSM
Configuring the Cellular Interface
To configure the cellular interface, enter the following commands in the cellular interface mode.
SUMMARY STEPS
1. configure terminal
2. interface cellular <slot/wic/port>
3. encapsulation ppp
4. ppp chap hostname <host>
5. ppp chap password 0 <password>
6. asynchronous mode interactive
profile number Number for the profile you are creating. You can create upto 16 profiles.
apn Access Point Name. You must get this information from the service
provider.
authentication The type of authentication. For example, CHAP, PAP.
Username The username provided by your service provider.
Password The password provided by your service provider.
243460
IOS
Dialer
Chat Script with
modem AT
commands
(ATDT*99*<N>#)
Interesting
Traffic
Embedded
Modem
PPP Session Established
PDP Context Established
IP Address
Obtained
using IPCP Transmitting Data packet
Modem AT
Command Data Call Setup GGSN
IP Address Negotiated
Carrier Network
Router IOS

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7. ip address negotiated
Note The PPP CHAP authentication parameters that you use in this procedure must be the same as the
username and password provided by your carrier and configured under the GSM profile.
DETAILED STEPS
Note When a static IP address is required for the cellular interface, the address may be configured as ip
address negotiated. During IPCP, the network ensures that the correct static IP address is allocated to
the device. If a tunnel interface is configured with ip address unnumbered <cellular interface>, it is
necessary to configure the actual static IP address under the cellular interface, in place of ip address
negotiated. For a sample cellular interface configuration, see the “Basic Cellular Interface
Configuration” section on page 22.
Command or Action Purpose
Step 1 Router# configure terminal
Example:
Router# configure terminal
Enters global configuration mode from the terminal.
Step 2 Router(config)# interface cellular <slot/wic/port>
Example:
Router (config)# interface cellular 0/0/0
Specifies the cellular interface.
Step 3 Router(config-if)# encapsulation ppp
Example:
Router (config-if)# encapsulation ppp
Specifies PPP encapsulation for an interface
configured for dedicated asynchronous mode or
dial-on-demand routing (DDR).
Step 4 Router(config-if)# ppp chap hostname <hostname>
Example:
Router (config-if)# ppp chap hostname [email protected]
Defines an interface-specific CHAP hostname. This
must match the username given by the carrier.
Step 5 Router(config-if)# ppp chap password <password>
Example:
Router (config-if)# ppp chap password 0 cisco
Defines an interface-specific CHAP password. This
must match the password given by the carrier.
Step 6 Router(config-if)# async mode interactive
Example:
Router (config-if)# async mode interactive
Returns a line that has been placed into dedicated
asynchronous network mode to interactive mode,
thereby enabling the SLIP and PPP commands in
privileged EXEC mode.
Step 7 Router(config-if)# ip address negotiated
Example:
Router (config-if)# ip address negotiated
Specifies that the IP address for a particular
interface is obtained via PPP/IPCP address
negotiation.

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Configuring DDR
To configure DDR for the cellular interface, follow these steps.
SUMMARY STEPS
1. configure terminal
2. interface cellular <slot/wic/port>
3. dialer in-band
4. dialer idle-timeout <seconds>
5. dialer string <string>
6. dialer group <number>
7. exit
8. dialer-list <dialer-group> protocol <protocol-name> {permit | deny | list <access-list-number> |
access-group}>
9. ip access-list<access list number>permit <ip source address>
10. line <slot/wic/port>
11. script dialer <regexp>
12. exit
13. chat-script <script name> ”” “ATDT*98*<profile number>#” TIMEOUT <timeout value>
CONNECT
14. interface cellular <slot/wic/port>
15. dialer string <string>
DETAILED STEPS
Command or Action Purpose
Step 1 Router# configure terminal
Example:
Router# configure terminal
Enters global configuration mode from the terminal.
Step 2 Router(config)# interface cellular <slot/wic/port>
Example:
Router (config)# interface cellular 0/0/0
Specifies the cellular interface.
Step 3 Router(config-if)# dialer in-band
Example:
Router (config-if)# dialer in-band
Enables DDR and configures the specified serial
interface to use in-band dialing.

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Step 4 Router(config-if)# dialer idle-timeout <seconds>
Example:
Router (config-if)# dialer idle-timeout 30
Specifies the duration of idle time, in seconds, after
which a line will be disconnected.
Step 5 Router(config-if)# dialer string <string>
Example:
Router (config-if)# dialer string gsm
Specifies the number or string to dial. Use the name
of the CHAT script here.
Step 6 Router(config-if)# dialer-group <number>
Example:
Router (config-if)# dialer-group 1
Specifies the number of the dialer access group to
which the specific interface belongs.
Step 7 Router(config-if)# exit
Example:
Router (config-if)# exit
Enters the global configuration mode.
Step 8 Router(config)# dialer-list <dialer-group> protocol
<protocol-name> {permit |deny |list
<access-list-number> | access-group}>
Example:
Router (config)# dialer-list 1 protocol ip list 1
Creates a dialer list for traffic of interest and permits
access to an entire protocol.
Step 9 Router(config)# ip access-list<access list
number>permit <ip source address>
Example:
Router (config)# ip access list 1 permit any
Defines traffic of interest.
Step 10 Router(config)# line <slot/wic/port>
Example:
Router (config-line)# line 0/0/0
Specifies the line configuration mode.
Step 11 Router(config-line)script dialer <regexp>
Example:
Router (config-line)# script-dialer gsm
Specifies a default modem chat script.
Step 12 Router(config-line)exit
Example:
Router (config-line)# exit
Exits line configuration mode.
Step 13 Router(config)# chat-script <script name> ””
“ATDT*98*<profile number>#” TIMEOUT <timeout value>
CONNECT
Example:
Router (config)# chat-script gsm "" "ATDT*98*2#"
TIMEOUT 60 "CONNECT“
Defines the ATDT commands when the dialer is
initiated.
Command or Action Purpose

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Configuring DDR Backup
To monitor the primary connection and initiate the backup connection when needed, the router can use
one of the following methods:
•Backup Interface—The backup interface that stays in standby mode until the primary interface line
protocol is detected as down and then is brought up.
•Floating Static Route—The route through the backup interface has an administrative distance that
is greater than the administrative distance of the primary connection route and therefore would not
be in the routing table until the primary interface goes down.
•Dialer Watch—Dialer watch is a backup feature that integrates dial backup with routing capabilities.
Configuring Interfaces to Use a Backup Interface
To configure one or more interfaces to use a backup interface, use the following commands, beginning
in global configuration mode.
SUMMARY STEPS
1. interface type number
2. backup interface cellular number
3. backup delay enable-delay disable-delay
Step 14 Router(config)# interface cellular <slot/wic/port>
Example:
Router (config)# interface cellular 0/1/0
Specifies the cellular interface.
Step 15 Router(config-if)# dialer string <string>
Example:
Router (config)# dialer string gsm
Specifies the dialer script (defined using the chat
script command).
Command or Action Purpose

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DETAILED STEPS
Note You cannot configure a backup interface for the cellular interface and any other asynchronous serial
interface.
Configuring DDR Backup Using Dialer Watch
To initiate dialer watch, you must configure the interface to perform DDR and backup. Use traditional
DDR configuration commands, such as dialer maps, for DDR capabilities. To enable dialer watch on the
backup interface and create a dialer list, use the following commands in interface configuration mode.
SUMMARY STEPS
1. configure terminal
2. interface type number
3. dialer watch group group-number
4. dialer watch-list group-number ip ip-address address-mask
5. dialer-list <dialer-group> protocol <protocol name> {permit | deny | list <access list number> |
access-group}
6. ip access-list <access list number> permit <ip source address>
7. interface cellular <slot/wic/port>
8. dialer string <string>
Command or Action Purpose
Step 1 Router(config)# interface type number
Example:
Router(config)# interface ATM0/0/0
Specifies the interface to be backed up and begins
interface configuration mode.
Step 2 Router(config-if)# backup interface cellular
<number>
Example:
Router(config-if)# backup interface cellular0/3/0
Specifies the cellular interface as backup.
Step 3 Router(config-if)# backup delay enable-delay
disable-delay
Example:
Router(config-if)# backup delay enable delay
Specifies delay between the physical interface going
down and the backup interface being enabled, and
between the physical interface coming back up and
the backup being disabled.